Find the direction cosines of the line passing through two points (4, – McqOptions

MCQOPTIONS

1.	Find the direction cosines of the line passing through two points (4, -5, -6) and (-1, 2, 8).
A.	( frac{5}{270}, frac{7}{ sqrt{270}}, frac{14}{ sqrt{270}} )
B.	( frac{7}{ sqrt{270}}, frac{7}{ sqrt{270}}, frac{7}{ sqrt{270}} )
C.	( frac{5}{ sqrt{270}}, frac{7}{ sqrt{270}}, frac{14}{ sqrt{270}} )
D.	( frac{5}{ sqrt{20}}, frac{7}{ sqrt{720}}, frac{14}{ sqrt{270}} )
Answer» D. ( frac{5}{ sqrt{20}}, frac{7}{ sqrt{720}}, frac{14}{ sqrt{270}} )

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